[ger21]

The Xylotex has connectors which gives you access to the unused pins of the parallel port. You can use these pins for anything you want. Home or limit switches, relays, probe. But you have to do the wiring yourself. The Xylotex just gives you a place to connect to the parallel port pins. If you're using TurboCNC, for example, you just tell the software which pins you're using for whatever you have.

All he's saying is that his driver had a terminal labeled for Home switches. That terminal was just a connection to a pin from the parallel port. He used that for his probe, instead of using a home switch.